IPA: //ˈsætɪni//
KK: /ˈsætɪni/
Having a smooth and shiny texture, similar to satin.
The dress was made of a satiny fabric that shimmered in the light.
Comparative: satinier
Superlative: satinest
Satiny → It is formed from "satin" (from Old French *satin*, meaning a type of smooth fabric) and the suffix "-y" (meaning characterized by). The word "satiny" describes something that is characterized by the smoothness or sheen of satin fabric.
Think of the smooth and shiny texture of satin fabric — that's what makes something "satiny".